smith



UNITED sTATEs PATENT oEEicE.

E. H. SMITH, OF NEW YORK, N. Y.

COPYING-PRESS.

Specification of Letters Patent No. 9,786, dated June 14:, 1853.

To all whom t may concern.'

Be it known that I, E. H. SMITH, of the city, county, and State of NewYork, have invented a new and useful Improvement in Copying-Presses; andI hereby declare that the following is a full and exact descriptionthereof.

To enable others to make and use my invention, I proceed to describe itsconstruction and operation; reference being had to the annexed drawingswhich make part of this specification.

Figure l, perspective view; Fig. 2, side elevation; Fig. 3, frontelevation; Fig. 4, plan and top View; Fig. 5, the sliding transversebar; Fig. 6, the hand lever, with the parts drawn separate, enlarged;Fig. 7, the adjustable stop.

Upon a base, C, Figs. 2 and t, of suitable size and shape I erect twosupports, D, and between them, across the upper surface of the base cuta channel for the the transverse sliding bar, Fig. 5. Between the twosupports, D, I hang the lever, Fig. 6, which is to work the press, thehand or pawl, E, being combined with it, so that in its operation itwill work with a toggle joint.

The transverse bar, Fig. 5, is made to lit int-o the base and to slideback and forth. Attached to it, and cast with it, is an upright support,G. To this support is attached the movable platen, A. To the twopermanent supports, D, is attached the stationary platen, B. Theadjust-able stop, Fig. 7, is adopted to be set upon one end of thetransverse bar and to be secured in any position by a wedge, I.

To operate the machine I place between the two platens the writing to becopied. I move the platen, A, close upon it, and set the adjustable stopat the propel' point, and then bring down the hand lever, Fig. 6, tillthe toggle is fully extended. The press may be operated without anadjustable stop, by cutting notches or teeth upon thetongue of thetransverse bar, but it would not be so exact. By the wedge, I, of theadjustable stop, Fig. 7, it can be placed at the exact distance requiredand is therefo-re preferable. The wedge is placed against the side ofthe tongue and is easily adjusted. The platens, (A and 13,) or pressingplates, are set vertically and across the transverse bar, and thereforework in a horizontal direction.

The hand lever may be of any convenient shape, combining the progressiveprinciple. The fulcrum is a pin which holds the lever between theupright supports or braces, D.-

To the lower part of the lever (see Fig. 6,) a hand or pawl is attached,to give the progressive motion required.

By the arrangement of the platens, three sides of each of them is free,and unincumbered. The same would be the case if the apparatus were setpermanently against the wall, and made to work in a vertical direction.

I do not confine myself to the hand lever above described. An eccentricupon the foot of the lever, acting against an adjustable stop wouldaccomplish the same thing. The stop might be held by a ratchet or ascrew, o-r notches with a tooth to fit into them, or any of the ordinarymodes, and it may be attached to the pawl so as to throw the platensapart with one motion of the lever and effect the pressure by thecontrary motion.

That I claim as my invention and desire to secure by Letters Patent is:

l. The employmentof the hand lever, Fig. 6, to operate the pressingplaten, through the agency, or by means, of the sliding transverse bar,Fig. 5, or its equivalent., in combination with the adjustable stop,Fig. 7, or any other mechanical device substantially the same.

2. The arrangement of the plates or platens, A and B, in such relationto their support and operating medium, as to render three of the fouredges of each platen un obstructed perfectly available and easy ofaccess.

E. H. SMITH.

Witnesses:

OWEN G. WARREN, F. SMITH.

